We propose to examine the bursting pressures of vessels taken in colectomies in an ex-vivo fashion. After we use the EnSeal to divide the inferior mesenteric artery at its origin, we will then use assess the bursting pressure of this seal. We will similarly assess the inferior mesenteric vein. We will measure the diameter of the vessels both in-vivo and ex-vivo. Finally, we will conduct histopathological examination of the sealed vessels to determine the effects of the EnSeal device on the structure of the vessels.